Proportional-calculating machine.



PATENTED PBB. 18; 1903I Noi- 879,178. 0. R.4 KELLY.. I

PROPORTIONAE OALGULATIN'G MACHINE. APPLICATION FILED JUNE 202190 Wu Jul.* Q. H U w UNITED STATES PArnNT. onnion.

oHARLEs R. KELLY, oF LoUisviLLn, KENTUCKY PnoPonrrIoNAL-cnLeULATING MACHINE.

mo. 879,178i

speeification of Letters Patent. 'i

' i Patenteareb. y1s,19os.

Application filed June 20,1907. Serial llo. 379.899.

i following is a specification.

My`invention relates broadly toicalculating machines' and lmore particularly to a machine or device for pfoportionally calculating divisions of rates and the like.

In a railroad office it is very frequently necessary to divide passenger and other rates between several lines over which tickets may be sold or freight forwarded, and it is the j ao object of my invention to provide a proportional calculating machine which will obviate the necessity vof the .immense amount of mental calculations involved in the above process.

My invention' resides specifically in the following features of construction, arrangement and operation as will be hereinafter described with reference to the accompanying drawings in which like numerals are used to'indicate like partsthroughout the several figures, and in which,

Figure 1 is a plan view of my improved device, Fig. 2 is a vertical Sectional view therethrough on the line 2-2 of Fig. 1, Fig. 3 is a detail Sectional view o f the hinged mounting of the indicator arms, Figs. 4 and 5 are, respectively, end and side elevations o'f the indicator on the clamping device, Fig. 6 is a vertical Sectional. view taken therethrough, and Fig. 7 is a detail ,Sectional view of the adjustable guide clamp for the proportional actuator. v

In the practical embodiment of my invention I provide a suitableboard 1 on which is mounted a stationary scale 2 and movable scales 3, 4 and the movable slide 5, said movable scales being provided with a longitudinal side opening within which the angular arm 6 of the metallicl plate 7 is mounted on the board 1, engaged to prevent displace- 4ment of said scales while allowing longitudinal movement of the same with relations to the board 1. I

The stationary and movable scales are each divided centrally and longitudinally to form side divisions, eachof which are separately graduated in such mannerthat the graduations of the money divisions are twice the value to those of the miles division. The nwebie scales are sidaby arranged upon the board 1, in juxtaposition with themselves and the stationary scale 2, the'slide 5 not beingjgraduated nor marked for the reason that it is unnecessary.

:Each of the slides 3, 4 and' 5 are provided with an indicatorv arin 8 extending from its respective scale-bar at the zero point thereof and swingingly adjustably mounted thereon screws 10 pivotally projecting through the piece 11. to which said arm 8 is connected. The indicator arms are arranged to lie 'across the face' of the stationary scale 2 and the intervening movable scales, if there are such, land extend uniformly outwardly across the face of the board 1. The idea, according to my invention, is to move the indicator arms S and their respective scale-bars proportionally with 'one another, and to do this' I pro- Vide a lazy tongs 12 to which said arms are detachably connected and which may be actuated upon the face of the board 1 longitudinally thereof, its ends having guide blocks 13 mounted within a guide channel 14 of said board 1. The lazy tongs 12 are provided with an upwardly projecting stud 15 constituting :a handle and may be locked in a desired degree of'adjustment. or actuation by means of the thumb screw 16 engaging upon a threaded stud 17 projecting upwardly from the guide block 13 at one end thereof.

The means for detachably securing the indicator arms 8 to the lazy tongs 12 comprise a clamping member 18, and ,said clamping member com v rises a resilient channel member 19 ad apta lefor adjustment upon anyone of the levers constituting the lazy tongs 12, and above which is pivotally swingingly conwhich the indicator arm 8 is slidablyheld, and prevented from removal therefrom by a bridge piece 21. Extending upwardly from oppoopposite vends thereof are the' handle members 22 and 23 vcurved inwardly to a oint central above said channel piece 19 an provided with coil spring 24arranged between their upper ends and normally spreading the samev 'apart. It will thus be seen thatin clamping the channel piece 19 upon one of the levers of the lazy tongs 12 I depend entirely upon the resiliency of said channel' piece, and in removing the same I spread the within a yoke frame 9, having adjusting' extensions thereof and engaging Ia lateralv site sides of the resilient channel piece 19 at' nected a second channel member 20 through sides thereof by forcing the upper ends of' the handle members 22 and 23 toward one another against the tension of spring 24.

, The principle of operation of my I have illustrated in Fig. 1 by a dotted positionof the lazy tongs and indicator arms, it

being noted that the arms 8, as shown in full lines, are set at 20, 44 and (SS of the stationary scale 2 and that the same when expanded are brought respectively to 27, 59 and 91 of said stationary scale, being thus moved while maintaining exactljglthe same relative distance between. .themselves from the beginning of the scale. To further illustrate the use of my invention,-I will describe the same in its most common application. In this illustration I Will sa'y a rate of 932.2. applies between two certain points 74 miles Adistant.- and over threelines of railroad i The present method is to first find the rate per mile by dividing the total number ofmiles into the amount and multiplying the rate per mile by the number of miles for each road. A is 13 miles, B 35 niles and (l 26 miles. 'l`o Work out these divisionsI Would set vthe first indicator arm at 13 miles, the second at b5 miles beyond the first and the third at 26 miles beyond the second, thus bringing into use the scales upon the movable scale-bars. Having done this I will then expand the l azy tongs until the last pointer is on 92.22 of the first scale, and when resting so the different indicator arms will shou' exactly the various amount for the different roads, A getting 139 cents, ``B*I $11.05 and 78 cents, making the total correct. lt will he understood ,that although I have shown in the accompanymg drawing a construction well adapted to perfm'm the functions set forth and the practical operation of thesame` l Will construct. the same upon a greatly enlarged scale and will otherwise change such details of the coustru -ti \n as fall within the. terms of the following claims.

ll aviug thus fullyI describml my invention, I claim:

l. ln a proportimial calcuh'tor, the combination of a plurality of movable scale bars, a lazy tongs for simultaneously i-noving said scale bars while maintaining their same relative distance, and means for adjustably, slidably connecting said scale bars to said lazy tongs. 4

- In the proportional calculator, the combination of a plurality of' movable scale-bars, mechanism for simultaneously moving said scale-bars While maintaining their sane'relative distance, and means for adjustably connecting said scale-bars to said mechanism, substant-ially as described.

3. In a proportional calculator, the combination of a plurality of movable scale invention bars, a. lazy tongs for simultaneously moving said scale bars While maintaining their same relative distance, and clips adjustable Within .said lazy tongs for the reception of a portion of said scale bars slidably therein.

4. In the proportional calculator, the combination ofa stationary scale, a plurality of movable scales arranged adjacent said stationary scale and provided with indicator arms extending thereupon across the face of said stationary scale and a lazy tongs to which said arms are attachable, for moving said arms and their respective scale-bars, while maintaining the same relative position to the arms to leach other and to the begin'- ning of the scale, substantially as described.

5. In the proportional calculator, thecombination of a stationary scale, a plurality of movable. scales indicator arms extending from said movable scales across said stationary scale, a lazy tongs for moving said movable scales, and clamping members for connections ivithin said lazy tongs and arranged to slidably receive said indicator arms, substantially as described.

6. In the proportional calculator, the combination of a stationary scale, a plurality of movable scales, indicator arms extending from said movable scales across said stationary scales, a. lazy tongs to Which said arnis are attachable for moving the same, and means for locking said lazy tongs in a select.- ed degree of adjustment, substantially as described.

7. In the proportional calculator, the combination of a stationary scale, movable scales arranged adjacent thereto, indicator arms swingingly pivotally connected to said movable scales and extending across said stationary scale, a lazy tongs to Which said arms are ad justably connected, for moving the same, and said movable scales, substantially as described.

S. In the proportional calculator, the combination of a. stationary scale, movable scales arranged adjacent theret-o, indicator arms pivotally swingingly mounted upon said movable arms and arranged across said stationary scale, alazy tongs 'for moving saidv arms and their respective scales in a relatively similar adjustment, clamping members arranged for connection within said lazy tongs and adapted to receive said arns slidably therein, and means for locking said lazy tongs in a of adjustment, subs'tantially as described.

In testimony whereof I afiix my signature in presence of two Witnesses.

CHARLES R. KELLY.` Witnesses J D. GIBBS, C. W, EAKEN.

attachable selected degree' 

